There’s a red-sauce-fueled resurgence happening in Little Italy.

For decades, the neighborhood seemed to be shrinking.

Once a sprawling 30-block enclave of Italian immigrants, the neighborhood has shrunk to five blocks along Mulberry Street between Canal and Broome.

Astronomical rents pushed out multigenerational businesses that had been fixtures for a century.

Italian families moved elsewhere.

Some old-timers even sounded the death knell.

But now, as Little Italy celebrates the 100th anniversary of its famed Feast of San Gennaro, a new generation of personalities and businesses is moving in — bringing fresh energy to a neighborhood that many…

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